Thereare　 floorsinthebuildingandmyhomeisonthe　 floor.  ...

問題詳情：

There are 　  floors in the building and my home is on the 　  floor.

             A. twenty; fifteenth                  B. twenty; fifteen

            C. twentieth; fifteen                  D. twentieth; fifteenth

【回答】

A

知識點：數詞

題型：選擇題